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Rhenium-doped tungsten powder (tungsten-rhenium alloy powder)

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Rhenium-doped tungsten powder is an alloy with tungsten as matrix and different contents of rhenium added. Tungsten and rhenium are refractory metals. A proper amount of rhenium dissolved in tungsten can form solid solution alloys. Under the "rhenium effect", the tungsten-rhenium alloy has higher plasticity, higher recrystallization temperature, better creep resistance at high temperature, higher thermoelectric potential and higher resistivity than pure tungsten. The tungsten-rhenium alloy has good electrical properties, ductility and machability, and can be used for high temperature thermocouple and cathode wire. Tungsten-rhenium alloys have better mechanical properties at high temperature than pure tungsten and can be machinedand welded.

Rhenium has the following properties: high melting point, strong resistance to chemical corrosion, ductility after recrystallization, high resistivity over a wide range of temperatures, low vapor pressure, good oxidation resistance at high temperatures, and good shock resistance. When more than 0.1% rhenium is added to tungsten, the material improvement effect begins to highlight, and with the increase of rhenium content, the effect also gradually improves. The commonly used low rhenium grades of tungsten-rhenium alloys are 1%, 3%, 5%, and high rhenium grades are 25% and 26%.

The series of rhenium doped tungsten powder developed by Rheniumet adopts unique wet doping process, which has the characteristics of uniform distribution of rhenium and other doping phases, low impurity content, uniform particle size distribution, easy molding and reprocessing.

Applicable features:

Rheniumet series of rhenium doped tungsten powder series dedicated to production of high-end tungsten base material, high quality, high performance requirements or deformation processing of manufactured goods, such as plate, sheet, wire, wire, rod, can replace pure tungsten, lanthanum, cerium tungsten and tungsten doping tungsten and tungsten materials, than pure tungsten has higher strength, service life and high temperature stable performance, the characteristics of higher performance to price ratio. They are mostly used in high temperature structural parts (nozzle, nozzle, heat shield, etc.), special filament, electrode, electronic components, etc.

Rhenium-doped tungsten powder brand number and main indexes:

Brand	Average particle size(um)	Loose specific gravity (g/cm3)	Main chemical composition (%)
Brand	Average particle size(um)	Loose specific gravity (g/cm3)	W	O	Re	HfC	ZrC
WRe0.1	2.0-4.0	-	≧99.8	≦0.12	0.1	-	-
WRe0.3	2.0-4.0	-	≧99.6	≦0.12	0.3	-	-
WRe0.5	2.0-4.0	-	≧99.4	≦0.12	0.5	-	-
WRe1	2.0-4.0	-	≧98.9	≦0.12	1	-	-
WRe3	2.0-4.0	-	≧96.9	≦0.12	3	-	-
WRe5	2.0-4.0	-	≧94.9	≦0.12	5	-	-
WRe25	2.0-4.0	-	≧74.9	≦0.12	25	-	-
WRe26	2.0-4.0	-	≧73.9	≦0.12	26	-	-
CDS-WHR25	2.0-4.0	-	matrix	≦0.12	25	1.0~4.0	-
CDS-WZR25	2.0-4.0	-	matrix	≦0.12	25	-	1.0~4.0

※ Special requirements can be customized supply

Rhenium-doped tungsten powder impurity element content (%)

Element	Maximum	Typical value	Element	Maximum	Typical value	Element	Maximum	Typical value
Fe	0.0050	0.0030	Sb	0.0005	0.0005	Zn	0.0005	0.0005
Ni	0.0030	0.0020	Pb	0.0005	0.0005	Mo	0.0050	0.0030
Cr	0.0010	0.0005	Ca	0.0015	0.0010	K	0.0050	0.0020
Cu	0.0010	0.0005	Cd	0.0005	0.0005	Na	0.0010	0.0010
Si	0.0020	0.0010	Co	0.0005	0.0005	C	0.0060	0.0030
Al	0.0015	0.0010	As	0.0005	0.0005	N	0.0150	0.0100
Mg	0.0015	0.0010	Bi	0.0005	0.0005	S	0.0020	0.0010
Mn	0.0005	0.0005	Ti	0.0005	0.0005	P	0.0010	0.0010
Sn	0.0005	0.0005	V	0.0005	0.0005	--	--	--